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Lunar Phases and Gravity Effects: Earth's Moon Exploration

Explore the Earth's moon, its phases, formation, gravity effects, and its relationship with Earth and the sun. Learn about lunar eclipses, tides, and celestial events like solar eclipses. Discover the mysteries and wonders of our Moon's orbit and revolution.

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Lunar Phases and Gravity Effects: Earth's Moon Exploration

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  1. Moon & Moon Phases

  2. Moon & Moon Phases • The moon is Earth’s only natural satellite. Its orbit around the earth is tilted 50.

  3. Moon & Moon Phases • The Earth & moon revolve around each other.

  4. Moon & Moon Phases • Scientists believe that the moon was formed when a large asteroid hit the Earth so hard, some of the mantle material was hurled into space.

  5. Moon & Moon Phases • The moon (Luna) is a solid sphere of rocks & dust. • The composition of the rocks is similar to Earth’s mantle.

  6. Moon & Moon Phases • The moon • Rotates on its axis • Has a very thin atmosphere

  7. Moon & Moon Phases • The moon does not generate its own heat & light. It reflects light from the sun.

  8. Moon & Moon Phases • The moon makes 1 complete revolution around the Earth about every 28 days • The moon makes 1 complete rotation about every 28 days. http://www.seds.org/pub/images/planets/moon/clementine/mpeg/viewers/msdos/animations/lunar/

  9. Moon & Moon Phases • Because rotation & revolution occur in the same amount of time – we only see one side of the moon • We never see the “far side” of the moon

  10. Moon & Moon Phases • Does the moon have day & night? Why? http://www2.jpl.nasa.gov/files/images/anim/eartmo.flc

  11. Moon & Moon Phases • The moon is about ¼ the diameter of the Earth. • The moon & Earth are about 240,000 miles apart.

  12. Moon & Moon Phases • ESSENTIAL QUESTION • IF HALF OF THE MOON IS ALWAYS LIT BY LIGHT FROM THE SUN, WHY DO WE NOT ALWAYS SEE ALL OF THE LIT HALF OF THE MOON?

  13. Moon & Moon Phases • http://www.cmf.nrl.navy.mil/clementine/clemovies/clemovies_index.html • Moon revolution • http://earthsci.terc.edu/content/visualizations/es2503/es2503page01.cfm?chapter_no=visualization

  14. Moon & Moon Phases • http://www.cmf.nrl.navy.mil/clementine/clemovies/clemovies_index.html • Moonglow - http://www.cmf.nrl.navy.mil/clementine/clemovies/clemovies_index.html

  15. Moon & Moon Phases • The moon is ½ lit all the time • The relative positions of the Earth, moon, & sun determine how much of the lit half we can see • http://www.astro.uiuc.edu/projects/data/MoonPhases/

  16. Moon & Moon Phases • The changing shapes of the moon are called phases.

  17. Moon & Moon Phases • The phases range from a new moon to a full moon (in about 14 days) then back to new moon (in about 28 days) • This pattern repeats every 28 days

  18. Moon & Moon Phases • Beginning with the new moon, the moon appears to get larger (waxing) • After reaching full moon, the moon appears to get smaller (waning) waxing waning

  19. Moon & Moon Phases • Solar Eclipse happens when the moon is between the sun & Earth. The moon casts a shadow on part of the Earth

  20. Moon & Moon Phases • Solar Eclipse

  21. Moon & Moon Phases

  22. Moon & Moon Phases • Lunar eclipses happen when the Earth is between the sun & moon. • The Earth casts a shadow on the moon

  23. Moon & Moon Phases

  24. Moon & Moon Phases • The gravity between the moon & Earth pulls on each others surface. • The moon’s gravity pulls on the Earth’s surface (water & land) • Water is easier to move & this causes tides in Earth’s oceans.

  25. Moon & Moon Phases • The moon’s gravity pulls all through the earth • The water bulges on the opposite side because of centrifugal force

  26. Moon & Moon Phases • The position of the sun, moon & Earth determine the tides

  27. Moon & Moon Phases Low Tides High Tides High Tides Low Tides

  28. Moon & Moon Phases • Notice how the tides change in relation to the red dot.

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